Can we just remove the sw_lpm_support from current xhci driver?

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To: "mathias.nyman@xxxxxxxxx" <mathias.nyman@xxxxxxxxx>, Greg KH <gregkh@xxxxxxxxxxxxxxxxxxx>
Subject: Can we just remove the sw_lpm_support from current xhci driver?
From: "Zengtao (B)" <prime.zeng@xxxxxxxxxxxxx>
Date: Mon, 15 Oct 2018 09:35:14 +0000
Cc: "linux-kernel@xxxxxxxxxxxxxxx" <linux-kernel@xxxxxxxxxxxxxxx>, "linux-usb@xxxxxxxxxxxxxxx" <linux-usb@xxxxxxxxxxxxxxx>

Hi:

I am recently reading the LPM related code in xhci driver, and I find 
that the xhci->sw_lpm_support is not really used, but I am not sure
 whether we should remove it or not? 

Any ideas, Thanks.

Regards
Zengtao

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